1215122341 has 2 divisors, whose sum is σ = 1215122342. Its totient is φ = 1215122340.

The previous prime is 1215122339. The next prime is 1215122351. The reversal of 1215122341 is 1432215121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 979377025 + 235745316 = 31295^2 + 15354^2 .

It is an emirp because it is prime and its reverse (1432215121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1215122341 - 2¹ = 1215122339 is a prime.

Together with 1215122339, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1215122351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 607561170 + 607561171.

It is an arithmetic number, because the mean of its divisors is an integer number (607561171).

Almost surely, 2^1215122341 is an apocalyptic number.

It is an amenable number.

1215122341 is a deficient number, since it is larger than the sum of its proper divisors (1).

1215122341 is an equidigital number, since it uses as much as digits as its factorization.

1215122341 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 480, while the sum is 22.

The square root of 1215122341 is about 34858.6049778243. The cubic root of 1215122341 is about 1067.1038052795.

Adding to 1215122341 its reverse (1432215121), we get a palindrome (2647337462).

The spelling of 1215122341 in words is "one billion, two hundred fifteen million, one hundred twenty-two thousand, three hundred forty-one".